Canon 70D vs Olympus E-3
The Canon EOS 70D and the Olympus E-3 are two digital cameras that were revealed to the public, respectively, in July 2013 and October 2007. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (70D) and a Four Thirds (E-3) sensor. The Canon has a resolution of 20 megapixels, whereas the Olympus provides 10 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 70D||Olympus E-3|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Four Thirds lenses|
|20 MP, APS-C Sensor||10 MP, Four Thirds Sensor|
|1080/30p Video||no Video|
|ISO 100-12800 (100-25600)||ISO 100-3200|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 1040k dots||2.5" LCD, 230k dots|
|Swivel touchscreen||Swivel screen (not touch-sensitive)|
|7 shutter flaps per second||5 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Weathersealed body||Weathersealed body|
|920 shots per battery charge||750 shots per battery charge|
|139 x 104 x 79 mm, 755 g||142 x 116 x 75 mm, 876 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 70D and the Olympus E-3? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
The physical size and weight of the Canon 70D and the Olympus E-3 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-3 is notably larger (14 percent) than the Canon 70D. Moreover, the E-3 is markedly heavier (16 percent) than the 70D. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (70D) and the Four Thirds Lens Catalog (E-3).
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Canon 70D»||5.5 in||4.1 in||3.1 in||26.6 oz||920||Y||Jul 2013||1,199||Canon 70D|
|Olympus E-3«||5.6 in||4.6 in||3.0 in||30.9 oz||750||Y||Oct 2007||1,699||Olympus E-3|
|Canon 80D« »||5.5 in||4.1 in||3.1 in||25.8 oz||960||Y||Feb 2016||1,199||Canon 80D|
|Canon G3 X« »||4.8 in||3.0 in||4.1 in||25.9 oz||300||Y||Jun 2015||999||Canon G3 X|
|Canon 7D II« »||5.9 in||4.4 in||3.1 in||32.1 oz||670||Y||Sep 2014||1,799||Canon 7D II|
|Canon T5« »||5.1 in||3.9 in||3.1 in||16.9 oz||500||n||Feb 2014||449||Canon T5|
|Canon 6D« »||5.7 in||4.4 in||2.8 in||27.2 oz||1090||Y||Sep 2012||2,099||Canon 6D|
|Canon 60D« »||5.7 in||4.2 in||3.1 in||26.6 oz||1100||Y||Aug 2010||1,399||Canon 60D|
|Canon 7D« »||5.8 in||4.4 in||2.9 in||30.3 oz||800||Y||Sep 2009||1,699||Canon 7D|
|Canon 50D« »||5.7 in||4.3 in||2.9 in||29.0 oz||800||Y||Aug 2008||1,299||Canon 50D|
|Nikon D7100« »||5.4 in||4.2 in||3.0 in||27.0 oz||950||Y||Feb 2013||1,199||Nikon D7100|
|Olympus E-5« »||5.6 in||4.6 in||3.0 in||30.8 oz||750||Y||Sep 2010||1,699||Olympus E-5|
|Olympus E-30« »||5.6 in||4.3 in||3.0 in||24.7 oz||750||n||Nov 2008||1,299||Olympus E-30|
|Olympus E-520« »||5.4 in||3.6 in||2.7 in||18.9 oz||750||n||May 2008||699||Olympus E-520|
|Olympus E-510« »||5.4 in||3.6 in||2.7 in||19.0 oz||750||n||Mar 2007||799||Olympus E-510|
|Olympus E-1« »||5.6 in||4.1 in||3.2 in||26.0 oz||750||Y||Jun 2003||1,699||Olympus E-1|
|Sony RX10« »||5.1 in||3.5 in||4.0 in||28.7 oz||420||Y||Oct 2013||1,299||Sony RX10|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 70D was launched at a markedly lower price (by 29 percent) than the E-3, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Canon 70D features an APS-C sensor and the Olympus E-3 a Four Thirds sensor. The sensor area in the E-3 is 33 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the 70D has a native 3:2 aspect ratio, while the one in the E-3 offers a 4:3 aspect.
With 20MP, the 70D offers a higher resolution than the E-3 (10MP), but the 70D has smaller individual pixels (pixel pitch of 4.11μm versus 4.74μm for the E-3). However, the 70D is a much more recent model (by 5 years and 8 months) than the E-3, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.
The resolution advantage of the Canon 70D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 70D for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Olympus E-3 are 18.2 x 13.7 inch or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inch or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inch or 30.9 x 23.2 cm for excellent quality prints.
The 70D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS 70D has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Olympus E-3 are ISO 100 to ISO 3200 (no boost).
For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the 70D provides substantially higher image quality than the E-3, with an overall score that is 12 points higher. This advantage is based on 0.9 bits higher color depth, 1.1 EV in additional dynamic range, and 0.7 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Canon 70D||APS-C||20.0||5472||3648||1080/30p||22.5||11.6||926||68||Canon 70D|
|Olympus E-3||Four Thirds||10.0||3648||2736||none||21.6||10.5||571||56||Olympus E-3|
|Canon 80D||APS-C||24.0||6000||4000||1080/60p||23.6||13.2||1135||79||Canon 80D|
|Canon G3 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||521||63||Canon G3 X|
|Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70||Canon 7D II|
|Canon T5||APS-C||17.9||5184||3456||1080/30p||21.9||11.3||724||63||Canon T5|
|Canon 6D||Full Frame||20.0||5472||3648||1080/30p||23.8||12.1||2340||82||Canon 6D|
|Canon 60D||APS-C||17.9||5184||3456||1080/30p||22.2||11.5||813||66||Canon 60D|
|Canon 7D||APS-C||17.9||5184||3456||1080/30p||22.0||11.7||854||66||Canon 7D|
|Canon 50D||APS-C||15.1||4752||3168||none||21.8||11.4||696||63||Canon 50D|
|Nikon D7100||APS-C||24.0||6000||4000||1080/60p||24.2||13.7||1256||83||Nikon D7100|
|Olympus E-5||Four Thirds||12.2||4032||3024||720/30p||21.6||10.5||519||56||Olympus E-5|
|Olympus E-30||Four Thirds||12.2||4032||3024||none||21.3||10.4||530||55||Olympus E-30|
|Olympus E-520||Four Thirds||10.0||3648||2736||none||21.4||10.4||548||55||Olympus E-520|
|Olympus E-510||Four Thirds||10.0||3648||2736||none||21.2||10.0||442||52||Olympus E-510|
|Olympus E-1||Four Thirds||4.9||2560||1920||none||..||..||..||..||Olympus E-1|
|Sony RX10||1-inch||20.0||5472||3648||1080/60p||22.9||12.6||474||69||Sony RX10|
Many modern cameras cannot only take still pictures, but also record videos. The 70D indeed provides movie recording capabilities, while the E-3 does not. The highest resolution format that the 70D can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 70D and the E-3 are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the E-3 offers a wider field of view (100%) than the one in the 70D (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 70D has a higher magnification (0.59x vs 0.575x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon 70D and Olympus E-3 in connection with corresponding information for a sample of similar cameras.
|Canon 70D||optical||Y||3.0||1040||swivel||Y||1/8000s||7.0||Y||n||Canon 70D|
|Olympus E-3||optical||Y||2.5||230||swivel||n||1/8000s||5.0||Y||Y||Olympus E-3|
|Canon 80D||optical||Y||3.0||1040||swivel||Y||1/8000s||7.0||Y||n||Canon 80D|
|Canon G3 X||optional||n||3.2||1620||tilting||Y||1/2000s||5.9||Y||Y||Canon G3 X|
|Canon 7D II||optical||Y||3.0||1040||fixed||n||1/8000s||10.0||Y||n||Canon 7D II|
|Canon T5||optical||n||3.0||460||fixed||n||1/4000s||3.0||Y||n||Canon T5|
|Canon 6D||optical||Y||3.0||1040||fixed||n||1/4000s||4.5||n||n||Canon 6D|
|Canon 60D||optical||Y||3.0||1040||swivel||n||1/8000s||5.3||Y||n||Canon 60D|
|Canon 7D||optical||Y||3.0||920||fixed||n||1/8000s||8.0||Y||n||Canon 7D|
|Canon 50D||optical||Y||3.0||920||fixed||n||1/8000s||6.3||Y||n||Canon 50D|
|Nikon D7100||optical||Y||3.2||1229||fixed||n||1/8000s||6.0||Y||n||Nikon D7100|
|Olympus E-5||optical||Y||3.0||920||swivel||n||1/8000s||5.0||Y||Y||Olympus E-5|
|Olympus E-30||optical||Y||2.7||230||swivel||n||1/8000s||5.0||Y||Y||Olympus E-30|
|Olympus E-520||optical||n||2.7||215||fixed||n||1/4000s||3.5||Y||Y||Olympus E-520|
|Olympus E-510||optical||n||2.5||215||fixed||n||1/4000s||3.0||Y||Y||Olympus E-510|
|Olympus E-1||optical||Y||1.8||134||fixed||n||1/4000s||3.0||n||n||Olympus E-1|
|Sony RX10||1440||Y||3.0||1229||tilting||n||1/3200s||10.0||Y||Y||Sony RX10|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 70D has a touchscreen, while the E-3 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.
The 70D writes its imaging data to SDXC cards, while the E-3 uses Compact Flash or xD Picture cards. The E-3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the 70D only has one slot.
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon EOS 70D and Olympus E-3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 70D||Y||stereo||mono||Y||-||mini||2.0||Y||-||-||Canon 70D|
|Olympus E-3||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-3|
|Canon 80D||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-||Canon 80D|
|Canon G3 X||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-||Canon G3 X|
|Canon 7D II||Y||stereo||mono||Y||Y||mini||3.0||-||-||-||Canon 7D II|
|Canon T5||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon T5|
|Canon 6D||Y||mono||mono||Y||-||mini||2.0||Y||-||-||Canon 6D|
|Canon 60D||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 60D|
|Canon 7D||Y||mono||none||Y||-||mini||2.0||-||-||-||Canon 7D|
|Canon 50D||Y||none||none||-||-||mini||2.0||-||-||-||Canon 50D|
|Nikon D7100||Y||stereo||mono||Y||Y||mini||2.0||-||-||-||Nikon D7100|
|Olympus E-5||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-5|
|Olympus E-30||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-30|
|Olympus E-520||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-520|
|Olympus E-510||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-510|
|Olympus E-1||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-1|
|Sony RX10||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony RX10|
It is notable that the 70D offers wifi support, while the E-3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Olympus E-3 (unlike the 70D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 70D and the E-3 have been discontinued, but can regularly be found used on eBay. The E-3 was replaced by the Olympus E-5, while the 70D was followed by the Canon 80D. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Olympus websites.
So how do things add up? Is there a clear favorite between the Canon 70D and the Olympus E-3? Which camera is better? The listing below highlights the relative strengths of the two models.
Advantages of the Canon EOS 70D:
- More detail: Offers more megapixels (20 vs 10MP) with a 44% higher linear resolution.
- Better image quality: Scores substantially higher (12 points) in the DXO overall assessment.
- More dynamic range: Captures a larger spectrum of light and dark details (1.1 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (0.7 stops ISO advantage).
- Broader imaging potential: Can record not only still images but also 1080/30p movies.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.59x vs 0.575x).
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster burst: Shoots at higher frequency (7 vs 5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (139x104mm vs 142x116mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 121g or 14 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (920 versus 750) on a single battery charge.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
- More modern: Reflects 5 years and 8 months of technical progress since the E-3 launch.
Reasons to prefer the Olympus E-3:
- More complete view: Has a viewfinder with a larger field of view (100% vs 98%).
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been around for much longer (launched in October 2007).
If the number of relative strengths (bullet points above) is taken as a guide, the 70D is the clear winner of the match-up (17 : 5 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Canon 70D and the Olympus E-3 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 70D or the E-3. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon 450D vs Canon 70D
- Canon 60D vs Canon 70D
- Canon 70D vs Fujifilm XP140
- Canon 70D vs Nikon D60
- Canon 70D vs Olympus E-M1 III
- Canon 70D vs Sony A6500
- Canon 800D vs Olympus E-3
- Canon SX410 vs Olympus E-3
- Leica M-E Typ 240 vs Olympus E-3
- Olympus E-3 vs Pentax MX-1
- Olympus E-3 vs Ricoh GR II
- Olympus E-3 vs Sony RX10 IV
Specifications: Canon 70D vs Olympus E-3
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Canon 70D||Olympus E-3|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Four Thirds lenses|
|Launch Date||July 2013||October 2007|
|Launch Price||USD 1199||USD 1699|
|Sensor Specs||Canon 70D||Olympus E-3|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||22.5 x 15.0 mm||17.3 x 13.0 mm|
|Sensor Area||337.5 mm2||224.9 mm2|
|Sensor Diagonal||27 mm||21.6 mm|
|Sensor Resolution||20 Megapixels||10 Megapixels|
|Image Resolution||5472 x 3648 pixels||3648 x 2736 pixels|
|Pixel Pitch||4.11 μm||4.74 μm|
|Pixel Density||5.91 MP/cm2||4.44 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100-12800 ISO||100-3200 ISO|
|ISO Boost||100-25600 ISO||no Enhancement|
|Image Processor||DIGIC 5+||TruePic III|
|DXO Sensor Quality (score)||68||56|
|DXO Color Depth (bits)||22.5||21.6|
|DXO Dynamic Range (EV)||11.6||10.5|
|DXO Low Light (ISO)||926||571|
|Screen Specs||Canon 70D||Olympus E-3|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||98%||100%|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||2.5 inch|
|LCD Resolution||1040k dots||230k dots|
|LCD Attachment||Swivel screen||Swivel screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon 70D||Olympus E-3|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||7 shutter flaps/s||5 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||150 000 actuations|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||CF or XD cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon 70D||Olympus E-3|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||Wifi built-in||no Wifi|
|Body Specs||Canon 70D||Olympus E-3|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||920 shots per charge||750 shots per charge|
139 x 104 x 79 mm
(5.5 x 4.1 x 3.1 in)
142 x 116 x 75 mm
(5.6 x 4.6 x 3.0 in)
|Camera Weight||755 g (26.6 oz)||876 g (30.9 oz)|
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